diff --git a/packages/@averjs/babel-preset-app/lib/babel__plugin-proposal-private-methods.d.ts b/packages/@averjs/babel-preset-app/lib/babel__plugin-proposal-private-methods.d.ts
new file mode 100644
index 00000000..4957e422
--- /dev/null
+++ b/packages/@averjs/babel-preset-app/lib/babel__plugin-proposal-private-methods.d.ts
@@ -0,0 +1 @@
+declare module '@babel/plugin-proposal-private-methods';
diff --git a/packages/@averjs/babel-preset-app/lib/index.ts b/packages/@averjs/babel-preset-app/lib/index.ts
index e0f708b4..415ccb24 100644
--- a/packages/@averjs/babel-preset-app/lib/index.ts
+++ b/packages/@averjs/babel-preset-app/lib/index.ts
@@ -7,6 +7,7 @@ import PolyfillsPlugin from './polyfillsPlugin';
 import PluginSyntaxDynamicImport from '@babel/plugin-syntax-dynamic-import';
 import PluginProposalDecorators from '@babel/plugin-proposal-decorators';
 import PluginProposalClassProperties from '@babel/plugin-proposal-class-properties';
+import PluginProposalPrivateMethods from '@babel/plugin-proposal-private-methods';
 import PluginTransformClasses from '@babel/plugin-transform-classes';
 import PluginTransformRuntime from '@babel/plugin-transform-runtime';
 
@@ -112,6 +113,7 @@ class BabelPresetApp extends Polyfills {
     ]);
 
     plugins.push([PluginProposalClassProperties, { loose: this.loose }]);
+    plugins.push([PluginProposalPrivateMethods, { loose: this.loose }]);
     plugins.push([PluginTransformClasses, { loose: this.loose }]);
 
     plugins.push([
diff --git a/packages/@averjs/babel-preset-app/package.json b/packages/@averjs/babel-preset-app/package.json
index c7ce8749..300f2093 100644
--- a/packages/@averjs/babel-preset-app/package.json
+++ b/packages/@averjs/babel-preset-app/package.json
@@ -30,6 +30,7 @@
     "@babel/plugin-proposal-class-properties": "^7.13.0",
     "@babel/plugin-proposal-decorators": "^7.14.2",
     "@babel/plugin-proposal-object-rest-spread": "^7.14.2",
+    "@babel/plugin-proposal-private-methods": "^7.13.0",
     "@babel/plugin-syntax-dynamic-import": "^7.8.3",
     "@babel/plugin-transform-arrow-functions": "^7.13.0",
     "@babel/plugin-transform-classes": "^7.14.2",